Influence is a very unpleasant subject and I deal with it in a maybe irresponsible way, which is to really ignore it. It would be a nightmare if we started to really think about it; it would tie our hands, it would tie everyone else's hands.
Each building has to be beautiful, but cheap and fast, but it lasts forever. That is already an incredible battery of seemingly contradictory demands. So yes, I'm definitely perhaps contradictory person, but I operate in very contradictory times.
But now sustainability is such a political category that it's getting more and more difficult to think about it in a serious way. Sustainability has become an ornament.
Any architectural project we do takes at least four or five years, so increasingly there is a discrepancy between the acceleration of culture and the continuing slowness of architecture.
I'd say that my profession ends where architectural thinking ends - architectural thinking in terms of thinking about programs and organizational structure. These abstractions play a role in many other disciplines, and those disciplines are now defining their 'architectures' as well.
The great problem of the concert hall is that the shoebox is the ideal shape for acoustics but that no architect worth their names wants to build a shoebox.